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Biomacromolecules and Micromolecules

The most abun...

Question

The most abundant chemical in living organisms could be

(a) protein (b) water (c) sugar (d) nucleic acid

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Solution

(b) There is abundance of water in living matter. It is the only polar molecule in living organisms, that can diffuse through a cell membrane without active transport. It is vital for a number of metabolic reactions and one of the raw materials for photosynthesis.

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Q. Which of the following statements are true?
(a) Proteins are the heteropolymer of

α

-amino acid.
(b) Sugar found in nucleic acid, is in the form of

β

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(c) Nucleic acids show acidic nature.
(d) 5-methyl uracil binds with the first carbon atom of the ribose sugar.
(e) Collagen is the most abundant protein in the plant world.

Q. How many of the given statements are correct?
A. Water is the most abundant chemical in the living organisms.
B. A protein is a heteropolymer and not a homopolymer.
C. In polysaccharide,left end is called reducing end & right end is called non-reducing end.
D. A nucleoside is the building block of nucleic acids, which consist of a heterocyclic compound, a monosaccharide and a phosphate.

Q. Living organisms require ___ to create proteins and nucleic acids in their body.

Q. .......... are the most abundant protein in the living world.

Q. ........... are the most abundant proteins in the living world.

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